Noun

1. An enclosed area used to contain domesticated animals, especially sheep or cattle.

   There are two steers in the third pen.

2. A place to confine a person; a prison cell.

   They caught him with a stolen horse, and he wound up in the pen again.

3. The bullpen.

   Two righties are up in the pen.

Verb

1. To enclose in a pen.

Etymology 2

Noun

1. A tool, originally made from a feather but now usually a small tubular instrument, containing ink used to write or make marks.

   He took notes with a pen.

2. The internal cartilage skeleton of a squid, shaped like a pen.

Related terms

• ball pen
• ball-point pen
• border pen
• bull pen
• cartridge pen
• felt-tip pen
• fountain pen
• goose pen

• lettering pen
• pen cancellation
• pen feather
• pen-mate
• penmanship
• pen name
• pen pal
• poison pen